244 



Pork Production 



The smaller the proportion of milk fed with the com, 

 the greater was its value a pound. 



From 2 to 3 pounds of milk to 1 pound of com are 

 required to make the ration balanced and most pro- 

 ductive of rapid gains for growing and fattening pigs. 

 However, when the supply of milk is abundant and cheap, 

 a larger proportion than 3 to 1 will often be profitable, 

 especially when grain is scarce and high in price. When 

 the supply of milk is limited, however, smaller proportions 

 will be necessary and will give, as a rule, the most eco- 

 nomical results, especially when grain is abundant and 

 relatively cheap. 



Buttermilk versus skim-milk. 



As indicated by the following table showing the average 

 composition of buttermilk and skim-milk, one would 

 expect them to be equally eflBcient as supplements to the 

 ordinary grains in pig feeding. 



Table XCI. — Composition or Buttermilk and Skim-Milk • 



Buttermilk is, as a rule, more variable in composition 

 and feeding value than is skim-milk, due to the fact that 



• Appendix, Henry and Morrison's " Feeds and Feeding." 

 » Determined by dividing the digestible carbohydrates plus 

 2i times the digestible fats, by the digestible proteins. 



